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Landscapers and groundskeepers water and mow lawns, trim plants, prune trees and shrubs and rake leaves. They may plant trees, shrubs, lawns and flowers, and apply mulch, fertilizers and pesticides.

Laundry and dry cleaning workers clean clothing, linens, rugs and other items. They also may staff the counter and receive articles from customers.

Law clerks research, write and read legal arguments and summarize information for lawyers and judges. Duties depend on place of work. Clerks who work for lawyers are usually interns preparing to become attorneys.

Law enforcement officers keep order and make sure people obey laws. Their main duties are to protect life and property, prevent crimes and investigate complaints and crimes. They make arrests, write reports of their activities and testify in court.

Lawyers study, explain and apply laws to specific problems. They advise clients of their legal rights and suggest courses of action. They represent clients in court and present supporting evidence.

Librarians organize materials in libraries and help people find them. Most libraries contain books, magazines, documents, recordings and films. Librarians select, order and classify items.

Licensed practical nurses (LPNs) care for the sick, injured and disabled. They work under the direction of a doctor or registered nurse. Most LPNs provide basic bedside care.

Light truck drivers transport goods or materials in small trucks. They help load trucks, drive them to customers and help unload shipments.

Loan counselors guide prospective loan applicants who have problems qualifying for traditional loans. They may help customers determine the best type of loan and explain loan requirements and restrictions.

Locksmiths and safe repairers install and repair locks and safes. They unlock homes or cars for locked-out customers.

Logging equipment operators drive logging tractors or other equipment with one or more accessories, including bulldozers, blades, grapples, cable winches and crane booms to fell trees, skid, load, unload or stack logs, or to pull stumps or clear brush.

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